Videos: Proofs of the Pythagorean Theorem (There is one demonstration video and 4 videos of proofs of the Pythagorean Theorem and 2 videos of the converse of Pythagorean theorem.)
Video Notes: The first three video are in a series. Each video shows a progressively more complex example. The last two videos are also in a series. They provide a slightly different explanation.
8.1 Voicethread: Similar Right Triangles
Alternate video: Geometric means in a right triangle
Videos: Proofs of the Pythagorean Theorem (There is one demonstration video and 4 videos of proofs of the Pythagorean Theorem and 2 videos of the converse of Pythagorean theorem.)
Trig Calculator
8.3 Voicethread: Right Triangle Trigonometry
Alternate Videos: Right triangle trigonometry
Video Notes: The first three video are in a series. Each video shows a progressively more complex example. The last two videos are also in a series. They provide a slightly different explanation.